Abstract Li4Ti5O12 with long cycling life has been deemed to be one of the most promising anode materials for lithium ion battery. Nevertheless, poor electronic conductivity impedes its application for energy storage. Meanwhile MXene possesses high electrical conductivity and moderate electrochemical energy storage. Herein, we develop a novel strategy for the in-situ synthesis of layered-stacked Li4Ti5O12-MXene composite. The synergistic effect of Li4Ti5O12 and MXene greatly improved the electrochemical properties of Li4Ti5O12-MXene composite. At a high current density of 10 A g− 1, a high discharge capacity of 116 mAh g− 1 can be achieved. Moreover, a high discharge capacity of 178 mAh g− 1 after 500 cycles can be maintained at a current density of 5 A g− 1. This work demonstrates a scalable route to assemble MXene-derived Ti-based materials for high-performance electrochemical energy storage applications.

中文翻译：

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用于高性能锂离子电池的层状Li 4 Ti 5 O 12 -Ti 3 C 2 T x (MXene)复合材料的简便合成

摘要 循环寿命长的Li4Ti5O12被认为是最有前途的锂离子电池负极材料之一。然而，较差的电子导电性阻碍了其在储能方面的应用。同时MXene具有高导电性和适度的电化学储能。在此，我们开发了一种原位合成层状堆叠 Li4Ti5O12-MXene 复合材料的新策略。Li4Ti5O12和MXene的协同作用大大提高了Li4Ti5O12-MXene复合材料的电化学性能。在 10 A g-1 的高电流密度下，可以实现 116 mAh g-1 的高放电容量。此外，在 5 A g-1 的电流密度下，500 次循环后仍可保持 178 mAh g-1 的高放电容量。